Question

what do significance levels and P values mean in hypothesis tests? what is statistical significance anyway?

what do significance levels and P values mean in hypothesis tests? what is statistical significance anyway?
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Statistical significance refers to the claim that a result from data generated by testing or experimentation is likely to be attributable to a specific cause. The fixed level of Probability of Type 1 error is called level of significance. It is fixed before the data are collected.

The obesrved level of significance is minimum lecel of significance at which Null hypothesis(H0) is rejected for the given data

The Researcher simply reports the P-value for the data observed . If onwards to keep level of significance below P-value, Ho would be accepted. If he to keep level of significance above the P-value then Ho would be rejected

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
What are the conventional levels of significance set by most researchers? What do these values mean...
What are the conventional levels of significance set by most researchers? What do these values mean (i.e., p values of .05 and .01)?
Which of the following p-values is statistically significant? Statistical significance is determined via hypothesis testing. Null...
Which of the following p-values is statistically significant? Statistical significance is determined via hypothesis testing. Null hypothesis = No difference What is the “magic number” at which we reject the null hypothesis?
Compare and contrast the “critical values approach” and the “p-value approach” for determining the statistical significance...
Compare and contrast the “critical values approach” and the “p-value approach” for determining the statistical significance of an hypothesis test.
Review Resources related to hypothesis testing, meaningfulness, and statistical significance. Review the American Statistical Association’s press...
Review Resources related to hypothesis testing, meaningfulness, and statistical significance. Review the American Statistical Association’s press release and consider the misconceptions and misuse of p-values. Consider the scenario: A research paper claims a meaningful contribution to the literature based on finding statistically significant relationships between predictor and response variables. In the footnotes, you see the following statement, “given this research was exploratory in nature, traditional levels of significance to reject the null hypotheses were relaxed to the .10 level.” Post...
In forming a hypothesis for a statistical test of significance, what is the null hypothesis representing...
In forming a hypothesis for a statistical test of significance, what is the null hypothesis representing ?
In a test of statistical significance, what does the p-value tell us? A. if the null...
In a test of statistical significance, what does the p-value tell us? A. if the null hypythesis is true B. if the alternative hypothesis is true C. the largest level of significance at which the null hypothesis can be rejected D. the smallest level of significance at which the null hypothesis can be rejected. Please explain exactly what the p-value is as I'm having trouble understanding it. thanks
Just because two or more values are different does not mean that they are different in...
Just because two or more values are different does not mean that they are different in a statistically significant manner. Researchers rely on the p values that are generated for each of their statistical tests to determine significance. If the p value is larger than the alpha, then they are not different in a statistically significant manner, and therefore the values are not considered different. In this journal activity, consider these concepts in terms of the differences between null and...
Pairs of P-values and significance levels, α, are given. For each pair, state whether the observed...
Pairs of P-values and significance levels, α, are given. For each pair, state whether the observed P-value would lead to rejection of H0 at the given significance level. (a)    P-value = 0.062, α = 0.05 reject H0 do not reject H0     (b)    P-value = 0.002, α = 0.001 reject H0 do not reject H0     (c)    P-value = 0.492, α = 0.05 reject H0 do not reject H0     (d)    P-value = 0.062, α = 0.10 reject H0 do not reject H0     (e)    P-value = 0.041, α...
For all hypothesis tests, be sure to include information for all 7 steps. For any two-sample...
For all hypothesis tests, be sure to include information for all 7 steps. For any two-sample or paired t-tests that you perform, in Step 6, show the decision rule based on BOTH the critical value and the p-value. Use the online app for the t-distribution to compute your p-values. 1. Cortisol level determinations were made on two samples of women at childbirth. Group 1 subjects underwent emergency cesarean section following induced labor. Group 2 subjects delivered by either cesarean section...
question 1 1) Consider a significance test for a null hypothesis versus a two-sided alternative. State...
question 1 1) Consider a significance test for a null hypothesis versus a two-sided alternative. State all values of a standard normal test statistic z that will give a result significant at the 10% level but not at the 5% level of significance. (Sec. 6.2) You perform 1,000 significance tests using α = 0.01. Assuming that all the null hypotheses are true, how many of the test results would you expect to be statistically significant? Explain your answer. (Sec. 6.3)...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT